Replying to Mid layer recommendations

Yo boys, I’m looking for a good mid layer puffy. I need as much insulation as possible with as little bulk as possible, and no hood. I have a Thermoball from TNF but want something warmer but still thinner if even possible. Been looking at the Patagonia Nano Air or Nano Puff or whatever the fuck it’s called, any one have experience w those or other recommendations? I wear a base layer and a shell but on cold days I need something thin and warm as fuck. Any words of wisdom are much appreciated